.music-header
  position: fixed
  width: 100%
  height: 55px
  line-height: 55px
  color: #FFFFFF
  text-align: center
  font-size: 18px
  .header-back
    position: absolute
    left: 10px
    font-size: 22px
  .header-title
    margin: 0 40px
    overflow: hidden
    text-overflow: ellipsis
    white-space: nowrap